Chp 15 Data Networks

Question 1

OSI

Answer 1

Open System Interconnect - makes it possible for various operating systems/machines to communicate with each other by having a standard model called th OSI reference model

Question 2

OSI Layer 1

Answer 2

Physical Layer - transmission media
i.e. cable

Question 3

OSI Layer 2

Answer 3

Data link - data communications and transfer
i.e. switch

Question 4

OSI Layer 3

Answer 4

Network Services - determines the appropriate route to take for data transmission
i.e. router

Question 5

OSI Layer 4

Answer 5

Transport - determines the quality of data transfer required

Question 6

OSI Layer 5

Answer 6

Session - manages the transfer session, and can start, stop, restart, or abandon data transfer

Question 7

OSI Layer 6

Answer 7

Presentation - responsible for converting data to a standard for all systems to use

Question 8

OSI Layer 7

Answer 8

Application - makes it possible for dissimilar systems to utilize network information for info exchange

Question 9

Layer 3 switches sacrifice _______

Answer 9

Layer 3 full functionality

Question 10

Layer 4 switches sacrifice

Answer 10

Transport layer functionality (L4)

Question 11

Higher layer network switches enable _____

Answer 11

network administrators to have more flexibility to manage or “shape” traffic to meet organizational needs

Question 12

Top - down design

Answer 12

ICT designer knows the software and applications to be used and specs system based off this

Question 13

Bottom - up design

Answer 13

ICT designer only knows the premises and distances between network devices (new construction, multi tenant commercial space)